The Vilnius International Festival of Lights, that covers the central part of the city, and has gained the recognition of countless visitors, will invite guests and residents of the capital of Lithuania to celebrate the birthday of Vilnius city for the second time on the 24-26th of January 2020. On the last weekend of January, lighting installations, light objects, projection and mapping projects created by Lithuanian and foreign artists will be installed in the courtyards of Vilnius city. The theme of the festival – the courtyards of Vilnius. All these objects are arranged sequentially along the festival route in different parts of the city. We want to create a mobile app, so that the festival visitors can visit all the objects in sequence and not miss any of them. On the app, visitors of the festival will be able to find all objects and all information about them – visiting hours, description of the object and its address. The app will also provide access to key festival news and festival partners. The festival’s visitors will be able to mark their favorite objects with the “like” button. The app is designed for convenient visitor navigation of the event area and important announcements. This festival, when organized in January 2019, showed that such an event is necessary and interesting for the citizens. Over 130,000 people, Vilnius’ residents and guests, visited the festival during the three evenings.